Kauai is Hawaii’s oldest and perhaps most picturesque island, dazzling visitors with its stunning natural wonders and breathtaking landscapes.
Often called „The Garden of Hawaii”, Kauai is the oldest island in the Hawaiian archipelago, home to diverse landscapes and stunning natural attractions. The island is famous for its lush rainforests, breathtaking waterfalls, and dramatic coastlines.
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Kauai attractions
Waimea Canyon
Known as the „Grand Canyon of the Pacific”, this canyon is one of Kauai’s most impressive natural sights and one of the world’s most beautiful gorges.
The nearly 14-mile long and more than 3,000-foot deep canyon was formed over millions of years by the erosion of the Waimea River and the enormous rainfall of Mount Wai’ale’ale. Its reddish-orange walls, deep ravines, and terraced structure create an amazing sight. At the bottom of the canyon, crystal-clear streams and smaller waterfalls make the view even more spectacular.
The canyon offers numerous lookout points with breathtaking panoramic views of the valley and surrounding mountains. The most famous is the Waimea Canyon Lookout, but it’s also worth visiting the lookouts near Puu Hinahina and Koke’e Lodge.
Nā Pali Coast
This breathtaking 17-mile stretch of Kauai’s northern shore is one of the world’s most enchanting and steepest coastlines. It can only be accessed by foot, boat, or helicopter.
Its steep, emerald-green cliffs dramatically rise from the turquoise ocean, in places reaching heights of several hundred meters. The vertical cliff faces are interrupted by narrow valleys and hidden beaches. The unique geological formations of the coastline formed over millions of years through the combined effects of volcanic activity and erosion.
In the valleys along the coast, there were once ancient Hawaiian settlements, traces of which – terraced agricultural areas and sacred sites – can still be discovered today. The area has rich biodiversity: it’s home to rare plants, bird species, and marine life.
One of the most adventurous ways to explore the coastline is by boat or kayak tour, during which visitors can discover caves and waterfalls. Dolphins and turtles are often encountered.
Kalalau Trail
One of the world’s most beautiful and also most dangerous hiking routes runs along the Nā Pali Coast, offering breathtaking views.
The 11-mile trail was used by ancient Hawaiians to reach the Kalalau Valley and its isolated beaches. The hike starts at Ke’e Beach and ends at Kalalau Beach, passing through numerous smaller valleys, streams, and steep cliffs. During the journey, hikers pass through various microclimates: from humid rainforests to rocky hillsides to tropical shores.
The difficulty level of the hike is exceptional; in several sections, hikers must navigate narrow, slippery paths and steep cliff faces, with drops of several hundred meters below. The most dangerous part of the route is the section called „Crawler’s Ledge” where the footpath is only a few centimeters wide and runs along the side of the cliff. A permit is required for the full trail, and at least one night must be spent in the wilderness, but the first two miles – leading to Hanakapi’ai Beach – can be hiked without a permit.
Lihue
The island’s capital and commercial center is located on the eastern shore.
Lihue’s history is tied to the golden age of sugarcane cultivation when the city served as the economic engine of the island. Traces of this heritage can still be discovered at the Grove Farm Homestead Museum, a carefully restored plantation residence.
In the city center is the historic Kauai Museum, which showcases the island’s rich cultural heritage, from ancient Hawaiian civilization to the influences of Polynesian, Japanese, Chinese, Filipino, and Portuguese immigrants. The museum’s special collection consists of old photographs, traditional crafts, and artistic creations.
One of its most beautiful attractions is Kalapaki Beach, a crescent-shaped, protected bay ideal for swimming, beginner surfing, and sunbathing.
Wailua Falls
One of the highest and most spectacular natural wonders of eastern Kauai plunges 173 feet into a deep, emerald-green pool.
The waterfall is located along the Wailua River, Kauai’s only navigable river. To approach the waterfall, you must hike a beautiful 2-mile trail that leads through dense rainforest. Along the path, hikers encounter diverse tropical vegetation, birdsong, and seasonal smaller waterways.
When visitors reach the waterfall, an amazing sight awaits them: a huge mass of water crashes with a thunderous roar into the crystal-clear pool, surrounded by lush vegetation and vertical rock walls. The braver visitors can swim in the pool. The waterfall is particularly impressive after rainy periods when the water volume increases, and the cascade can be seen in its full glory.
Opaeka’a Falls
One of Kauai’s most easily accessible and yet most beautiful natural attractions, located along a tributary of the Wailua River.
The name of the waterfall in Hawaiian means „rolling shrimp”, referring to the shrimp that were once abundant in the pool below the waterfall. The nearly 150-foot high waterfall cascades down in two branches over a cliff covered with dense, green vegetation and has abundant water flow year-round. The landscape surrounding the waterfall is impressive: lush mountains, dense forests, and the valley of the Wailua River.
The specialty of the waterfall is that it can be viewed from a comfortable lookout point, easily accessible by car along Kuamoo Road (Highway 580). From the lookout point, there is not only an unparalleled view of the waterfall but also of the Wailua River valley and the distant mountains.
Koke’e State Park
A magical nature reserve in western Kauai, offering numerous hiking trails, breathtaking viewpoints, and a unique ecosystem.
The park, covering more than 10,000 acres, is located adjacent to Waimea Canyon and features diverse habitats: from wet mountain forests to drier plateaus. One of the park’s most special plants is the koa tree, native only to the Hawaiian Islands. Besides the native flora, many rare bird species can be observed here, such as the endangered akikiki or the puaiohi.
At the center of the park is the Koke’e Natural History Museum, which presents the area’s history, geology, and biodiversity through interactive exhibitions.
The park has more than 45 miles of hiking trails of varying difficulty levels: from easy walks to challenging, full-day hikes. The park’s most famous lookout points, Kalalau Lookout and Puu O Kila Lookout, offer magnificent panoramic views of the Nā Pali Coast.
Kalalau Lookout
One of Kauai’s most breathtaking viewpoints offers an incredible panorama from an elevation of 4,000 feet of the Kalalau Valley, the cliffs of the Nā Pali Coast, and the Pacific Ocean.
The lookout is located in Koke’e State Park and is relatively easily accessible by paved road. From the viewpoint, visitors can look into the Kalalau Valley, which was home to ancient Hawaiians and which today can only be accessed on foot or by boat. The steep walls of the valley are covered with dense forest, and when the clouds lift, the ocean undulating at the bottom of the valley provides a breathtaking sight.
Spouting Horn
One of the most spectacular natural wonders of Kauai’s southern coast is a special geyser-like phenomenon that has become one of the most photographed locations on the island.
The phenomenon occurs at a lava rock where waves are forced into an underground lava tube, and due to pressure, can shoot up to 50 feet high through a small opening. The water jet becomes particularly impressive during strong waves and is often accompanied by a characteristic hissing, whistling sound. According to Hawaiian legends, the whistling is the voice of Kaikapu, a mighty lizard that a young warrior, Liko, trapped in this lava tube.
The park developed around the Spouting Horn allows observation of the phenomenon from a safe distance. The area is especially popular at sunset.
Fern Grotto
One of Kauai’s most romantic and mystical locations is a cave-like recess covered with ferns along the Wailua River. It was once accessible only to the Hawaiian royal family.
The natural formation was created by thousands of years of erosion by the river, and its walls are densely covered with various ferns, mosses, and other tropical plants. The cave has special acoustics, which has made it a popular venue for weddings and musical performances for a long time.
The cave can only be reached by water, usually as part of an organized tour. On the boat trip upstream, participants learn about local history, flora and fauna, and Hawaiian culture.
Near the Fern Grotto is also Secret Falls (Uluwehi Falls). It’s accessible after a short kayak trip and hike, leading to a beautiful smaller waterfall and natural pool.
Allerton Garden
Located in southern Kauai, it’s known as one of the world’s most beautiful and unique tropical gardens.
The garden was developed in the 1930s by Robert Allerton and his adopted son, John Gregg Allerton, on a former royal estate. The 200-acre area was carefully designed into „garden rooms” separated by hedges, walls, and natural boundaries. The garden has numerous special spaces: there’s a bamboo forest, tropical fruit orchard, waterfront garden, and an impressive Moreton Bay fig tree avenue.
Perhaps the most famous parts of the garden are the giant fig trees, whose enormous aerial roots give the area an almost otherworldly atmosphere – it’s no coincidence that scenes from „Jurassic Park” were filmed here.
The garden is significant not only from a botanical perspective but also represents artistic value: antique statues, fountains, and carefully designed water features make the visit even more attractive. The garden can only be visited as part of a guided tour, during which visitors learn about the history of the garden, the origin and significance of the plants, and the challenges of design and maintenance.
Hanalei Bay
The crescent-shaped Hanalei Bay is one of the most iconic and picturesque locations on Kauai’s northern coast, characterized by lush, green mountains, crystal-clear water, and golden sand beaches.
The town of Hanalei, situated on the bay’s shore, is a charming, laid-back settlement that has preserved its authentic Hawaiian character. In the historical center of the town is the more than 100-year-old Wai’oli Hui’ia Church, whose distinctive green tower and colorful stained glass windows represent unique architectural value.
The bay’s beach is ideal for sunbathing, swimming, and surfing, especially during the summer months when the sea is calmer. The more adventurous can explore the mouth of the Hanalei River and the coastal mangrove swamps, which are home to rich birdlife, by kayak. The location has appeared in numerous films, including „South Pacific” and „The Perfect Storm”. One of the most beautiful views of the bay can be enjoyed from the Hanalei Lookout, located along Highway 56.
Poipu Beach
Often mentioned as one of Hawaii’s most beautiful and safest beaches, it provides an ideal location for families and water sports enthusiasts alike.
The beach actually encompasses two sandy bays separated by a narrow strip of land, Nukumoi Point. The eastern bay is quieter, has shallower water, and is ideal for families with small children, while the deeper water of the western section offers opportunities for more experienced swimmers and divers. The beach is protected by coral reefs, which reduce the force of the waves while offering excellent opportunities for snorkeling and observing colorful tropical fish.
One of the special features of Poipu Beach is that Hawaiian monk seals are often seen resting on the shore, as well as sea turtles grazing in the shallow water. Snorkeling along the coral reef adjacent to the beach, visitors can observe up to 35 different species of fish, including Hawaii’s state fish, the Humuhumunukunukuapua’a.
Ke’e Beach
The endpoint of Kauai’s northern shore, an idyllic sandy beach section. This is where the land meets the legendary Nā Pali Coast, and where the famous Kalalau Trail begins.
The crescent-shaped bay of the beach is protected from larger waves, making it ideal for swimming and snorkeling during the summer months when the sea is calmer. Underwater, there is an extensive coral reef that is home to colorful tropical fish, turtles, and other marine life.
Ke’e Beach is also culturally significant: nearby is Nāula, an ancient Hawaiian cultural site that once served for the training of priests. Sunset from the beach is a particularly wonderful sight.
Hanakapi’ai Beach
A remote, pristine beach section in northern Kauai that can only be reached on foot via the first section of the Kalalau Trail.
The hike to the beach starts from Ke’e Beach and is about 2 miles long, over terrain of moderate difficulty. The path runs along the stunning Nā Pali Coast, so hikers can enjoy breathtaking views along the way. During the hike, visitors also cross the Hanakapi’ai River, which can swell significantly during the rainy season, sometimes making crossing a challenge.
The special beauty of the beach comes from the surrounding steep, green cliffs and the massive waves arriving at the shore. It’s important to know that due to strong currents and dangerous waves, Hanakapi’ai Beach is not suitable for swimming – several fatal accidents have occurred here. Visiting the beach is more about experiencing the pristine beauty and power of nature.
The impressive Hanakapi’ai Falls is located 2 miles further from the beach. This is a 300-foot high cascade that pours into a crystal-clear pool.
Kauai weather: when is the best time to visit?
Kauai has a tropical climate that provides pleasant temperatures year-round, yet there are significant differences in rainfall between seasons and different areas of the island.
Spring (March-May):
Spring is a pleasant time on Kauai, with moderate temperatures and gradually decreasing precipitation. The average temperature ranges between 72-81°F, and although showers occur, they are generally shorter than during the winter period. April and May are already drier months, ideal for beach activities and hiking. During the spring season, the island’s vegetation is particularly lush and flowering, thanks to the winter rains.
Summer (June-September):
Summer in Kauai is warm and relatively dry, especially in the southern and western areas. The average temperature ranges between 75-86°F, and the amount of rainfall decreases significantly. This period is ideal for beach activities, as the sea is calmer and clearer. During the summer months, showers are also less frequent in the northern part of the island, making this the best time to explore the Nā Pali Coast and the Kalalau Trail.
Fall (September-November):
Fall is one of the most pleasant seasons on Kauai, when temperatures are still summery (73-84°F), but there are fewer tourists. The weather generally remains dry during September and October, but the rainier season may begin in November. This period can be ideal for those who want to avoid crowds but still enjoy good weather. The ocean temperature also remains pleasant, so water sports can still be practiced.
Winter (December-February):
Winter in Kauai means the rainy season, especially in the northern and eastern parts of the island, where Mount Waialeale is one of the rainiest places on Earth. The average temperature ranges between 70-79°F, so it’s still pleasant, but frequent showers may limit outdoor activities. The sea’s waves are also stronger during this period, especially on the northern shore, which is good for surfers but can make beach activities more dangerous.
Best time to travel:
The most ideal time to visit Kauai is the late spring (April-May) and summer (June-September), when the weather is drier and sunnier, ideal for exploring the island’s natural beauties and for water activities. If someone wants to explore the Nā Pali Coast, it’s best to visit during the summer months when the sea is calmer, and the hiking trails are drier.